Gluteal Region Flashcards
Gluteus Maximus Origin
Ilium posterior to posterior
gluteal line; posterior surface of
sacrum and coccyx; and sacrotuberous
ligament
Gluteus Maximus Insertion
most fibers end in iliotibial
tract to lateral condyle of tibia; gluteal
tuberosity
Gluteus Maximus Innervation
Inferior gluteal nerve
(L5, S1, S2)
Gluteus Maximus Action
extend hip joint between
flexed and standing positions and
assists in its lateral rotation; steadies’
thigh and assists om rising for a sitting
position
Gluteus Maximus Arterial Supply
superior and inferior
gluteal arteries
Gluteus Medius Origin
external surface of ilium between anterior and posterior gluteal lines
Gluteus Medius Insertion
lateral surface of greater trochanter of femur
Gluteus Medius Innervation
Superior gluteal nerve (L4, L5, S1)
Gluteus Medius Action
abduct and anterior portions medially rotate hip joint; keep pelvis level
when opposite limb is elevated
Gluteus Medius Arterial Supply
superior gluteal artery
Gluteus Minimus Origin
external surface of ilium between anterior and inferior gluteal lines
Gluteus Minimus Insertion
anterior surface of greater trochanter of femur
Gluteus Minimus Innervation
Superior gluteal nerve (L4, L5, S1)
Gluteus Minimus Action
abduct and anterior portions medially rotate hip joint; keep pelvis level
when opposite limb is elevated
Gluteus Minimus Arterial Supply
superior gluteal artery
Piriformis Origin
anterior surface of 2nd -4th sacral
segments; superior margin of greater
sciatic notch and sacrotuberous ligament
Piriformis Insertion
superior border of greater
trochanter of femur
Piriformis Innervation
anterior rami of S1 and S2
Piriformis Action
laterally rotate extended hip
joint; abduct flexed hip joint; steady
femoral head in acetabulum (stabilizes
hip joint)
Piriformis Arterial Supply
superior and inferior
gluteal arteries
Superior Gemellus Origin
ischial spine
Superior Gemellus Insertion
medial surface of
greater trochanter
(trochanteric fossa) of femur
Superior Gemellus Innervation
Nerve to
obturator internus (L5, S1)
Superior Gemellus Action
laterally rotate
extended hip joint; abduct
flexed hip joint; steady
femoral head in acetabulum
(stabilizes hip joint)
Superior Gemellus Arterial Supply
inferior gluteal artery
Obturator Internus Origin
pelvic surface of ilium and
ischium; obturator membrane
Obturator Internus Insertion
medial surface of greater
trochanter (trochanteric fossa) of
femur
Obturator Internus Innervation
Nerve to the obturator
internus (L5, S1)
Obturator Internus Action
laterally rotate extended hip
joint; abduct flexed hip joint; steady
femoral head in acetabulum
(stabilizes hip joint)
Obturator Internus Arterial Supply
obturator artery
Inferior Gemellus Origin
ischial tuberosity
Inferior Gemellus Insertion
medial surface of
greater trochanter
(trochanteric fossa) of femur
Inferior Gemellus Innervation
Nerve to
quadratus femoris (L5, S1)
Inferior Gemellus Action
laterally rotate
extended hip joint; abduct
flexed hip joint; steady
femoral head in acetabulum
(stabilizes hip joint)
Inferior Gemellus Arterial Supply
medial
circumflex femoral artery
Quadratus Femoris Origin
lateral border of ischial
tuberosity
Quadratus Femoris Insertion
quadrate tubercle on
intertrochanteric crest of femur and
area inferior to it
Quadratus Femoris Innervation
Nerve to quadratus
femoris (L5, S1)
Quadratus Femoris Action
laterally rotates hip joint;
also pulls femoral head into
acetabulum to stabilize hip
joint/pelvis
Quadratus Femoris Arterial Supply
medial circumflex
femoral and inferior gluteal arteries
